1001822 has 4 divisors (see below), whose sum is σ = 1502736. Its totient is φ = 500910.

The previous prime is 1001821. The next prime is 1001831. The reversal of 1001822 is 2281001.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1001797 and 1001806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250454 + ... + 250457.

It is an arithmetic number, because the mean of its divisors is an integer number (375684).

2^1001822 is an apocalyptic number.

1001822 is a deficient number, since it is larger than the sum of its proper divisors (500914).

1001822 is an equidigital number, since it uses as much as digits as its factorization.

1001822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500913.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1001822 is about 1000.9105854171. The cubic root of 1001822 is about 100.0606964852.

Adding to 1001822 its reverse (2281001), we get a palindrome (3282823).

The spelling of 1001822 in words is "one million, one thousand, eight hundred twenty-two".